eBay

Compatible: Fit for 10", 12",14" and 16" fans. For dual fan wiring, you would need two of this relay kit.
Connection: RED to 12VDC positive battery terminal, COFFEE to Fan Positive, BLACK to Ignition, GREY to Sending Unit per wiring diagram.
Package: Include 1x Wiring Diagram, 2x 40A relay with wiring harness, 1x 185'F on-175'F off temperature switch, 1x 3/8" Thread-In Probe, 1x 3/8" to 1/2" adapter, 2x inline fuse holder, 2x 20 amp fuse, 8x ring terminals, 4x fan pigtail connectors. Please check relevant operation video when you install it in doubt.
Temperature: Approximately 185'F On - 175'F Off. Voltage: 12VDC.
Ensure：If there is any problem with the product, please do not hesitate to contact us, we will help you solve the problem.

For reference: 12 Gauge - 20 Amps 10 Gauge - 30 Amps 8 Gauge - 40 Amps Package Included: 1x 40A Relay with Wiring Harness 1x Thermostat Switch 185'F On - 175'F Off 1x 3/8" to 1/2" Adapter 1x Inline Fuse Holder 1x 20 Amp Fuse 4 Ring Terminals 2 Wire Connectors Fits for 265 283 305 307 327 350 383 400 396 402 427 454 472 502 260 289 302 351W 347 352 360 390 406 427 428 429 460 351C 351M 400M 273 318 340 360 361 383 400 413 426W 440 455 330 326 Engines.